Wood-sawing machine.



T.' URB/msm. WODD SAWING MACHINE.

APPLICATION FILED IULY 19.1916.

Patented May 14, 1918.

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WOOD SAWING MACHINE.

APPLxcATmN F1LEDJuLY19.1s1s.

l ,$66,355. Patented May 14, 1918.

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31A/vanto@ :annoncen n nnaivsm, or HOLLAND, lcerny),

Woon-sawrne MACHINE.

Specification of Letters Patent.

Patented May la, 1918.

Application filed July 19, 1916. Serial No. 110,108.

To all whom may cof/cern Be it known that I. Tiinononn Unansiii, a citizen of the United States, residing at Holland. in the county of'liucas and State of Ohio, have invented ynew and useful 4Iniprovements in lVoodSawing Machines. of which the following is a specification.

This invention relates to irnproveinentsln wood sawing machines andhas particular application to a machine whereby a cross cut saw may be operated convenientljY by one operator.

ln carrying out the present invention, it is mv purpose to provide a wood sawing inachine whereby a single operator maivv Inanipulate a cross cut saw c'onvenientljr ,and witha minimum effort and wherein the saw will be held in engagement with the timber under pressure at all timesytherebv enabling the sav: to bite `into the wood. l

lt is also mv purposeto provide a machine of the class described ywherein the supports will remain stationary and rigid in the 0pcration ofthe saw. Awhereby preventing lateral movement of the saw and creeping of the supports inthe operation ofthe lVith'the above'and` other 'objects in view, the invention consists in the construction. combination and arrangement of parts hereinafter set forth in and falling within"r the scope of the claims.

ln the accompanying drawings:

Figure 1 is a view in side elevation of a wood sawing machine constructed in accordance with the present invention. the same being shown in use.

Fig. 2 is a top plan View of the same.

Fig. 3 is a vertical sectional view therethrough.l on the line 3-3 of Fig. 1.

Fig. 4 is a horizontal sectional view on the line 4-4 of Fig. 1.

Fig. 5 .is a perspective view of the holding dogs.

Referring now to the drawings in detail, 1 designates a base constructed of suitable material and provided with depending prongs 2 adapted to bite into the ground. Uprising from the base 1 is a vertical standard 3 and fastened to the standard 3 adjacent to the upper end thereof is one end of a horizontal supporting arm 4 adapted to overlie the timber being cut. Secured to the standard 3 adjacent to the upper end thereof is a slotted bracket 5 and mounted in the bracket 5 and capable of vertical adjustment therein. is a bolt 6. Pivoted between its ends upon thebolt 6 is a lever T having one end formed to 4provide a handle 8. Hinged to the other end ofthe lever 7 an arm 9 connected to one extremity of a cross` cut saw blade l() and pivot-ally connected to the other endof the saw blade' 10 yis one extremity of an arm llhaving the other end hinged to one end of an arm l2. This arm 1Q is pivotally connected ,to the outer end Vof the supporting arm i and bearing upon the arm 12 is a spring Pivotallv mounted upon the arm 'et adjacent to the standard 3 a spring operated arm llei provided with a roller 15 engaging the 'upper edge of the saw blade. These spring operated arms ,12 and 14 exert downward pressure on the saw blade 140 to hold the latter in engagement .with the timber. .1 6 indicates holding dogslpivoted upon the arm e andv designed to bite into the timber to prevent longitudinal movement of the arm 4: 'across fthe timber. Secured to the supporting arm 4 ,a guide 17 that engages the saw 10 in theinitial operation thereofto hold the blade straight.

The supporting arm i is adj ustablj' securedto the standard 3 b v a bolt 18 which extends through the arm and through a vertical slot 19 formed in the standard. The standard is counter sunk on one side adjacent the slot to receive the head 20 of the bolt to hold the latter from turning. thus making it possible to tighten the nut 21 so as to hold the arm 4 in anjT adjusted vertical position.

The bolt G which pivotallj' secures the lever 7 to the bracket 5 extends through a vertical slot Q2 in the bracket and carries a nut 23 which may be tightened to hold the lever in any adjusted position. It will be noted that this manner of individuali;7 connecting the arms 4 and lever 7 to the standard 3 allows for independent adjustment which is often advantageous, as for instance, when it is desirable to change the position of the arm 4t to better accommodate itself to a log and still leave the operating lever in its original adjusted position.

In practice7 the dogs 16 are engaged with the work and the saw blade held to the work under the action of the spring arms 12 and 14C. The bolt 6 carrying the lever 7 is now adjusted in the bracket 5 to the desired position and the lever '7 swung back and forth to reciprocate the saw blade 10, thereby cutting the timber.

A prong 24 is pivotally secured as at 25 to an end plate :26 liXed to the upper terminal of the standard 3 and this prong may, as will be clearly understood, be swung into diiiferent positions with respect to the standard so as to assist in supporting the latter by engaging the ground or other support at certain tiines. The dogs 16 are preferablyY held in gripping position by means et a spring 16 interposed between the dogs and connected thereto, as clearly illustrated in Fig. 5 of the drawings.

The coil spring 16 encircles the rods 2T and 28 at their overlapping portions and engages respectively the laterally turned ends ot the rods. The rod 2T extends through one of the prongs 16 and is secured in fixed relation thereto by a nut whereas the other rod is enlarged adjacent its outer terminal and formed along one edge with ratchet teeth 30 which are engaged by a spring pressed pawl 31 piroted to the other dog. The pawl provides tor an adjustment to properly accommodate the dogs to various sizes ot tree trunks.

claim:

1. In a Wood sawing machine, a standard, an arnil` means for adjusting the arin ver ticalljv on the standard While holding the same in a horizontal plane, a lever having its pivotal point vertically adjustable on said standard, said arin and lever being adjustable independentljT oi" one another, and a sait operatirelj7 connected to said arm and lever.

In a Wood sawing machine, haring a longitudinal slot formed therein, a bolt eX- Leeeee tending through said slot and adjustable therein, an arin secured at one end to said bolt, a bracket xed to said standard and formed With a longitudinal slot running` lengthwise of the standard, a bolt extending through the slot in the loraclretand adjustable to di'erent posit-ions, lever piroted intermediate its ends on said loolt, and a san' operatively connected to the arm and lever, the arm and lever being adjustable independently of each other.

3. in a sawing machine, an arni adapted to overlie a tree to be saWed, a pair ot' dogs piroted at one end and adapted to engage a tree, a rod ixedto one oi? the dogs and ei:- tending toward the other, a second rod slidable through one ot said dogs and extending toward the other, said rods overlapping at their inner ends, a coil spring encircling the overlapping portions, the. rods being et tended laterally at their inner ends to engage said spring, the slidably mounted rod being provided on its outer end "with teeth and a paWl carried by one ot the dogs to engage the teeth.

el. ln a sawing machine, an arni, a pair of dogs piroted to said arm, a rod secured to one of the dogs and extending toward 'the other, a second rod slidable through the other dog, said rods haring their inner portions overlapping, spring means connectinesaid overlapped portions and means tor adi jinstabljY connecting the slidabl)v mounted rod to its dog. j

In testimony whereof fl attix inv signature.

THEODORE URNSKT.

Copies of this patent may be obtained for five cents each, by `addressing the Commissioner of Patents. Washington, B.. C. 

